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Unconstrained pulse transit time measurement system for computer users.

Juwan Park1, Yongkyu Lim, Youngjoon Chee

  • 1Interdisciplinary Program in Medical and Biological Engineering, Seoul National University, Republic of Korea.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
PubMed
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This study presents a new, unconstrained method for measuring Pulse Transit Time (PTT) using everyday computer equipment. The system accurately assesses vascular function, paving the way for widespread health monitoring.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Physiology
  • Health Informatics

Background:

  • Pulse Transit Time (PTT) is a non-invasive physiological parameter used to assess vascular health.
  • Traditional PTT measurements often require specialized equipment and controlled environments.
  • Photoplethysmography (PPG) and electrocardiography (ECG) are established non-invasive techniques for physiological monitoring.

Purpose of the Study:

  • To develop and evaluate an unconstrained PTT measurement system for computer users.
  • To integrate ECG and PPG sensors into common computer peripherals (chair and mouse).
  • To assess the feasibility of ubiquitous vascular function monitoring in daily life.

Main Methods:

  • Developed a system incorporating ECG sensors in a chair and PPG sensors in a mouse.

Related Experiment Videos

  • Defined PTT as the time delay between the R peak of the ECG signal and the steepest point of the PPG waveform.
  • Collected data from computer users to validate the proposed measurement method.

    • Main Results:

    • The developed system successfully measured PTT in an unconstrained manner.
    • A high correlation coefficient of 0.93 was observed between the system's PTT measurements and conventional PTT measurements.
    • The system demonstrated the potential for continuous and unobtrusive health monitoring.

    Conclusions:

    • The proposed unconstrained PTT measurement system offers a practical approach for evaluating vascular function.
    • Integration of PPG and ECG into computer peripherals enables convenient health monitoring for computer users.
    • This technology holds significant promise for advancing ubiquitous health monitoring and early detection of cardiovascular issues.